Sound-deadening construction



l-l.` A. GORMAN souun DEADENINQ consumimos v Filedl April 19, 1926 j Y Z IMI l 0 Il u ||||||||||H..|||||I Ime/zh a. a, @f- 9M orilla VZI i the description proceed struction of this character in which the upf served that there is no through lcontact be- Patented June 5, 1928.

UNiTED lSTATES HENRY A. GOBIAN, OIICHICAGO, ILLINOIS.

SOUND-DEADNING CONSTRUCTION. I

Applicatie!! mea April 1a, 192s. serial no. masse This invention relates to a new and im-` proved floor construction, and more particularly to a ioor construction designed to prevent the transmission of sound.

Certain types of double ioor construction have heretofore been developed in the endeavor to prevent the transmission of sound through the floor. Such constructions generally involve a sub-floor and nailing strips supported in some manner upon the floor, and a finished floor* nailed Ito the nailing strips. Various cushioning means have been located under the nailing strips, and it is customary to fill the space betweenfthe subiioor and floor with cinders or some other insulating material, to overcome the drum effect of the empty space; In such constructions, although cushloning means are placed between the nailin strip and sub-Hoor, nails passing through t e nailing strip and into the sub-floor have been found to transmit sound vibrations, and'thus the effectiveness of the cushioning material is largely lost.

It is an object of the present invention to provide a new and improved floor construction in which a nailing strip is positively secured to a sub-floor without any direct contact with either the nailing strip or the floor by metallic members engaging the other of the two members. g v

It is a further object to provide 'a conward as well as the downward movement o the nailing strip is limited by sound deadening, cushioning means. v

t is an additional object to provide a construction of this character composed of but few parts and adapted for rapid commercial production, and for installation without special tools or skilled labor.

Other and further objects will appear as s. I have illustrated a preferred embodiment of my invention in the accompanying drawings; in which Figure is a fragmentary plan view showmg a nailing strip secured to a sub-floor by my improved invention;

Figure 2 isa transverse section -taken on line 2-2 of Figure 1; and

-Figure 3 is a perspective view showing Athe securing strip and aring members.

The sub-floor 11 is laid upon any suitable floor supporting construction which may be: of any form desired, and has not been shown as it forms no partA of the present invention. The sound deadening strip 12 rests upon the floor 11 and may be formed of any desired material, such, for example, as feltell vegetable fibers. The nailing strip 13 rests upon the sound deadening material 12 and is provided at intervals withA the securing strips 14, best-f shown in Figure 3. y These strips are formed of metal, having enlarged openings 15 formed in the ends ofthe strip which extend laterally beyond the nailing strip.

The strips 14 are secured to the under side of the nailing strip 13, preferably by means of the nails`16 passing through the holes 17. These nails may be of sucicnt length to be clinched by bending down the ends, as shown at 17 in Figure 2. ySmall cushloning members or pads 18, larger than the openings 15 in the strips 14, are placed above -the openin s. The nails 19 are driven through these pa s 18 and through the cushioning stri nails may be clinched, as shown at 20.

-In 'the form of construction shown, the metallic washers 21 are placed under the heads of the nails 19 and give, an enlarged bearing to the nails. These washers 21 may be economically formed from the portion .Struck out of the members 14 in punching the holes 15. The finished floor 21. is lnailed to the nailing strips 13 in the usual manner.

In the construction shown it will be obtween the finished floor and sub-floor, except throu h a heavy layer of cushioning material. he passage of sound vibrations is thus positively prevented. The openings 15 are of such size that the nails 19 cannot touch the metallic member 14. Itwill be understood that the member 14 will preferably be formed of metal of sufficient thickness so vas to render it substantially rigid in use. The nailing strips'13 cannot rise under warping or other stresses, except by compressing the pads 18. These will already b e under considerable compression, as the nails 19 will be driven in suiciently so as to force the washers21 solidly down against the pads. An'y upward movement will, therefore, be very limited, and will be resisted. Similarly, any downward movement can only take place by compressin the pad 12.

Itwil beun erstood that-the space between the floor vand sub-floor may be filled with cinders or-other material to 12 into the sub-floor 11. These eliminate the drum effect. It will be understood also that may be cut away or notched, as may the nailing Strips and sound deadening) strips e necessary for permitting the passage of pipes and conduits.

I have illustrated one preferred form onf my invention by way of example, but it is to be understood that I contemplate such changes and modifications to meet varying conditions as may come within the spirit and scope of the appended claims.

I claim:

1. In a oor construction, a sub-ioor, a cushioning member, a nailing strip on the cushioning member, a Hoor secured to the nailing strip, a securing strip fastened to the extensions ofthe securing strip and the sub.-

y securlng strip,

Hoor.

3. In a floor construction, a sub-floor, a cushioning member, a nailingstrip on the cushioning member, a floor secured to the nailing strip, a securing strip fastened to the under side of the nailing strip and resting on the cushioning member, anl opening in the securing means extending through the openings in the securing member into the sub-floor, and cushioningmeans between the securing means and the securing strip.

.on the cushioning member, -face secured to the nailing strip,

4. In a floor construction, a sub-Hoor, a cushionlng member on the sub-floor, a nalling strlp on the cushionlng member, a floor nailed lto the upper side of the nailing strip, f

ing strip, openings in said portions, cushioning members of greater area than said o enings on said portions, and nails exten through the latter cushioning members, through the openings in the securing member, out of engagement with the securing member, and into the sub-Hoor.

5. In a building construction, a structural element, a cushioning member upon said e1ement, a nailing strip on the cushioning member, a structural surface secured to the nailing strip, a securing element serving to fasten down the nailing strip and having portions extendin laterally beyond the nailing strip, and cushion fastening means associated withv said extensions ing element against the cushioning member. 6. In ay building construction, a structural element, a cushioning member, a nailing strip a structural sura securing strip fastened to the under side of the nailing strip and resting on the cushioning member, anlopening in the securing strip, securing means extending through the openings in the securing strip into the structural. element, and cushioning means between'the securing means and the securing strip.

Signed at Chicago, Illinois, this 31st day of March, 1926.

HENRY A. GORMAN.

ing.

for fastening the' secur A'Il 

